进程间共享数据Manager

from multiprocessing import Process, Manager
import os


def f(d, l):
    d[os.getpid()] = os.getpid()   # 获取进程号
    l.append(os.getpid())
    print(l)


if __name__ == '__main__':
    with Manager() as manager:
        d = manager.dict()   # 生成一个字典，可以在多个进程间共享和传递
        l = manager.list(range(5))  # 生成一个列表，可以在多个进程间共享和传递
        p_list = []
        for i in range(10):
            p = Process(target=f, args=(d, l))
            p.start()
            p_list.append(p)
        for res in p_list:
            res.join()

        print(d)
        print(l)

Modifications to mutable values or items in dict and list proxies will not be propagated through the manager, because the proxy has no way of knowing when its values or items are modified. To modify such an item, you can re-assign the modified object to the container proxy